/Engine/Plugins/Developer/Concert/ConcertUI/ConcertSharedSlate/Source/ConcertSharedSlate/Public/Session/Browser/Items/ConcertGroupTreeItem.h
typedef [TFunction](API\Runtime\Core\GenericPlatform\TFunction)< [TArray](API\Runtime\Core\Containers\TArray)< [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FConcertSessionTreeItem](API\Plugins\ConcertSharedSlate\Session\Browser\Items\FConcertSessionTreeItem) >>()> FGetSessions